Ready image file using build-in Gallery, with Intent.ACTION_PICK

We can start a activity with Intent.ACTION_PICK, to start Android build-in Gallery app to select image.

Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, RQS_GET_IMAGE);

The selected image can be retrieved using data.getData() in onActivityResult().

Uri imageUri = data.getData();

In order to make use of ShrinkBitmap() in last post "Reduce Bitmap size using BitmapFactory.Options.inSampleSize", re-write ShrinkBitmap(Uri uri, int width, int height), instead of ShrinkBitmap(String file, int width, int height); to get a reduced size bitmap.

package com.AndroidLoadImageView;

import java.io.FileNotFoundException;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.Toast;

public class AndroidLoadImageViewActivity extends Activity {
 
 final static int RQS_GET_IMAGE = 1;
 
 ImageView image;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        image = (ImageView)findViewById(R.id.image);
        Intent intent = new Intent(Intent.ACTION_PICK,
          android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        startActivityForResult(intent, RQS_GET_IMAGE);

    }
    
 Bitmap ShrinkBitmap(Uri uri, int width, int height){
      
         BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();
            bmpFactoryOptions.inJustDecodeBounds = true;

            Bitmap bitmap = null;;
   try {
    bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri));
    
    int heightRatio = (int)Math.ceil(bmpFactoryOptions.outHeight/(float)height);
             int widthRatio = (int)Math.ceil(bmpFactoryOptions.outWidth/(float)width);
             
             if (heightRatio > 1 || widthRatio > 1)
             {
              if (heightRatio > widthRatio)
              {
               bmpFactoryOptions.inSampleSize = heightRatio;
              } else {
               bmpFactoryOptions.inSampleSize = widthRatio; 
              }
             }
             
             bmpFactoryOptions.inJustDecodeBounds = false;
             bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(uri));
             
   } catch (FileNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }

   return bitmap;
    }

 @Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  // TODO Auto-generated method stub
  super.onActivityResult(requestCode, resultCode, data);
  
  if (resultCode == RESULT_OK){
   if(requestCode == RQS_GET_IMAGE){
    Uri imageUri = data.getData();
    String imageFile = imageUri.toString();
    Toast.makeText(AndroidLoadImageViewActivity.this, 
      imageFile, 
      Toast.LENGTH_LONG).show();
    Bitmap bm = ShrinkBitmap(imageUri, 300, 300);
          image.setImageBitmap(bm);
   }
     
  }
 }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
<ImageView  
 android:id="@+id/image"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content"
    />
</LinearLayout>